Archibald, IN

Fitzgerald J Archibald, Bangalore IN

Patent application number

Description

Published

20080222370

METHOD AND APPARATUS FOR DATA STREAM MANAGEMENT - A method and apparatus of managing data stream, the method comprising archiving received data in a circular buffer; utilizing a breakpoint in realizing the archived received data continuity, wherein the breakpoint is set to the last data portion of the archived received data; when the archiving of the received data approaches the end of the circular buffer, stitching the last portion of the archived received data to the start of the circular buffer; and setting the breakpoint to the updated last data portion of the archived data.

Fitzgerald J. Archibald, Thuckalay IN

Patent application number

Description

Published

20080309786

METHOD AND APPARATUS FOR IMAGE PROCESSING - Digital camera audio/visual capture includes bandpass and notch filtering for the audio input during camera lens motor operation; the filtering may be active during capture or the audio segments may be marked for later noise suppression processing.

12-18-2008

20090024234

Apparatus and method for coupling two independent audio streams - In providing a seamless transition between two audio Streams using the cross-fade technique, a clock rate in processing the current audio Stream is increased. The increased audio Stream processing rate permits the current audio Stream to finish processing the initial audio Stream by the beginning of the fade-out or fade-in duration period, whichever is longer. The initial audio Stream continues to be presented at the original clock rate, even during the fade-out and/or fade-in duration. However, the portion of the initial audio Stream that is to be played during the fade-in and/or fade-out portion of the presentation is stored in a memory unit. During the Cross-Fade Duration, the portion of the initial audio Stream stored in the memory unit is retrieved and combined with a second audio Stream according to the cross-fader algorithm.

01-22-2009

Fitzgerald John Archibald, Kanyakumari District IN

Patent application number

Description

Published

20080235011

Automatic Level Control Of Speech Signals - Automatic level control of speech portions of an audio signal is provided. An audio signal is received in the form of a sequence of samples and may contain speech portion and non-speech portions. The sequence of samples is divided into a sequence of sub-frames. Multiple sub-frames adjacent to a present sub-frame are examined to determine a peak value of samples in the sub-frames. A gain factor is computed for the present sub-frame based on the peak value and a desired maximum value for said speech portion, and each sample in the present sub-frame is amplified by the gain factor. In an embodiment, variations in filtered energy values of multiple sub-frames enable determination of whether a sub-frame corresponds to a speech or non-speech/noise portion.

09-25-2008

20100017203

AUTOMATIC LEVEL CONTROL OF SPEECH SIGNALS - A method and apparatus for processing audio signals. The method includes receiving an audio signal as a sequence of digital samples, said audio signal containing a speech portion and a non-speech portion, dividing said sequence of digital samples into a sequence of sub-frames, selecting a set of sub-frames from said sequence of sub-frames, said set including a current sub-frame, determining whether a difference of peak values for any pair of sub-frames is greater than a pre-determined threshold, wherein said pair of sub-frames are contained in said set of sub-frames, and concluding that said current sub-frame represents said speech portion if said difference of peak values exceeds said pre-determined threshold.

01-21-2010

20100063807

SUBTRACTION OF A SHAPED COMPONENT OF A NOISE REDUCTION SPECTRUM FROM A COMBINED SIGNAL - A system and methods of subtraction of a shaped component of a noise reduction spectrum from a combined signal are disclosed. In an embodiment, a method includes identifying a selected frequency component using a corresponding frequency component of a noise sample spectrum. A noise set is comprised of the noise sample spectrum. The method further includes forming a shaped component of a noise reduction spectrum using a processor and a memory based on a combined signal spectrum and the selected frequency component. The method also includes subtracting the shaped component of the noise reduction spectrum from the combined signal spectrum.

03-11-2010

Fitzgerald John Archibald, Thuckalay Kanyakumari District IN

Patent application number

Description

Published

20100054542

PROCESSING VIDEO FRAMES WITH THE SAME CONTENT BUT WITH LUMINANCE VARIATIONS ACROSS FRAMES - A sequence of image frames are processed to determine if a pair of image frames in the sequence contain a same content, but have different global luminances. If the global luminances are different despite the content being the same, the global luminance of one of the image frames in the pair is adjusted to reduce the difference in the global luminances. The global luminance-adjusted image frames may be provided for further processing operations such as compression and global image stabilization. Reducing the global luminance difference may provide benefits such as improvements to compression and global image stabilization.